var NS4DOM = document.layers ? true:false;
var IEDOM = document.all ? true:false;
var W3CDOM = document.getElementById ? true:false;

function confirmShow() {
	var answer = confirm("This operation will take a while (20+ seconds).\n Are you sure you want to proceed?");
	
	if (answer)
		return true;
	else
		return false;	
}

function allhide()
{
	var x = new Array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
		for ( var i = 0; i < 26; i++ ) {
			var letter = "letter" + x[i];
			if (IEDOM) {
				gone = document.getElementById(letter);
				if (gone) {
					gone.style.display = 'none';
				}
				//eval( "document.all." + letter + ".style.display = 'none'" );
			}
			if (NS4DOM) {
				ids.letter.display = 'none';
			}
			if (W3CDOM) {
				gone = document.getElementById(letter);
				if (gone) {
					gone.style.display = 'none';
				}
			}
		}
}




function showall()
{
	var x = new Array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');

	for (var i = 0; i < 26; i++)
	{
		var letter = "letter" + x[i];
		show(letter);	
	}
}




function show(layer_on)
{
	if (IEDOM)
	{
		here = document.getElementById(layer_on);
		if (here) {
			here.style.display = 'block';
		}
	}
	
	if (NS4DOM)
	{
		ids.layer_on.display = 'block';
	}
	
	if (W3CDOM)
	{
		first = document.getElementById(layer_on);
		if (first) {
			first.style.display = 'block';
		}
	}
}



function justgo()
{
	var current = document.cat_form.cat_select.value;
	gotothing(current);
}

function gotothing(cat_id)
{
	window.location = "directory.php?C=" + cat_id;
}

function woi() {
	alert("working on it");
}

function toggle(divID) {
	div = document.getElementById(divID);
	if (div.style.display != "none") {
		div.style.display = "none";
		document.getElementById("advancedSearchA").innerHTML = document.getElementById("advancedSearchA").innerHTML.substring(0,16)+"+";
	} else {
		div.style.display = "block";
		document.getElementById("advancedSearchA").innerHTML = document.getElementById("advancedSearchA").innerHTML.substring(0,16)+"-";
	}
}